According to the DTT Technical Plan authorized by the Government of Spain in June 2019, all DTT channels in Spain must be HD from January 1, 2023. That leaves solely two years of leeway to remove channels in SD. Currently, Spanish channels use MPEG-2 for SD channels, and MPEG-4 for HD. The bitrate in each instances could be very comparable, since MPEG-Four compresses higher than MPEG-2 regardless of providing a lot greater high quality.
Spain will remove SD channels earlier than January 1, 2023
In each instances, DVB-T expertise is used. Some nations have already migration to DVB-T2, however in Spain it isn’t but identified what will probably be executed. The Government has two choices: remove SD channels and depart solely HD channels with DVB-T and MPEG-4, or go on to DVB-T2 and make use of extra environment friendly codecs similar to H.265 (HEVC) .
From what’s described within the DTT Technical Plan, the latter is almost definitely to occur. Since summer season 2019, it’s obligatory that each one televisions have built-in DVB-T2, though some producers have been doing so since 2015, together with HbbTV 2.0.1 for LOVEStv. The similar applies to exterior tuners.
In addition, the truth that the DTT Technical Plan speaks of 4K UHD broadcasts signifies that the soar to DVB-T2 is sort of sure, because the broadcasts in 4K TVE exams already use that normal. A potential intermediate answer can be to broadcast the 4K channels with DVB-T2, and hold the HD channels below DVB-T, though the standard of the HD channels would stay the identical.
The transfer to DVB-T2 appears essentially the most smart factor to do: opening the door to 4K
Going to DVB-T2 and H.265 would permit, for instance, to supply twice the standard in HD channels present with out rising the spectrum, along with rising the out there area. With this, it might be potential to think about a DTT with solely HD channels, and the area that at present occupies the SD channels, to be occupied by 4K DTT channels. For instance, as an alternative of the 9 channels which can be at present broadcasting in duplicate in SD, there needs to be Four in 4K.
Currently there are hundreds of thousands of individuals in Spain who don’t have televisions appropriate with HD channels, so they might be compelled to purchase a brand new tuner, or use a brand new tv. Spain will not be ready right now to finish DVB-T, and whether it is actually going emigrate to DVB-T2 in 2023, it’s obligatory to hold out campaigns that inform the general public of the adjustments which can be to come back. We will see what’s lastly determined, however it’s doubtless that on this coming 2021 a choice will already be made on this regard.